Doctor Preload Bearing Adjustment tools enable technicians to remove all endplay from wheel end bearings and set them to light, measured preload settings, in under one minute, according to the company. The “second generation” 900 Series tools for steer, drive and trailer axles improve the speed and accuracy of the final bearing settings when used with Temper-Loc spindle nuts, also manufactured in the USA by Temper Axle Products Corporation. Every wheel end can be set to the same, consistent bearing setting. Users are experiencing improved wheel seal performance, reduced uneven tire wear and positive changes in fuel economy, according to the company. The Doctor Preload tools are covered by a two-year limited warranty from the date of purchase.
